1，安装插件

npm install compression-webpack-plugin --save--dev

2，引用插件和配置规则

const CompressionPlugin = require('compression-webpack-plugin');
const productionGzipExtensions = /\.(js|css|json|txt|html|ico|svg)(\?.*)?$/i;

3，在webpack插件中使用

new CompressionPlugin({
	filename: '[path].gz[query]',
	algorithm: 'gzip',
	test: productionGzipExtensions,
	threshold: 10240,
	minRatio: 0.8,
	deleteOriginalAssets: false
})

//比如react的webpack配置中
 config.plugins.push(
	 new CompressionPlugin({
	 filename: '[path].gz[query]',
	 algorithm: 'gzip',
	 test: productionGzipExtensions,
	 threshold: 10240,
	 minRatio: 0.8,
	 deleteOriginalAssets: false
	 }),
 );

//比如umi配置中
chainWebpack(memo) {
	memo.devtool = false;
	memo.plugin('CompressionPlugin').use(new CompressionPlugin({
	filename: '[path].gz[query]',
	algorithm: 'gzip',
	test: productionGzipExtensions,
	// 只处理大于xx字节 的文件，默认：0
	threshold: 10240,
	// 示例：一个1024b大小的文件，压缩后大小为768b，minRatio : 0.75
	minRatio: 0.8, // 默认: 0.8
	// 是否删除源文件，默认: false
	deleteOriginalAssets: false,
	}));
}